CN102578118A - Microcapsule pesticide compounding sucrose ester with abamectin and preparation method of microcapsule pesticide - Google Patents
Microcapsule pesticide compounding sucrose ester with abamectin and preparation method of microcapsule pesticide Download PDFInfo
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- CN102578118A CN102578118A CN2012100201251A CN201210020125A CN102578118A CN 102578118 A CN102578118 A CN 102578118A CN 2012100201251 A CN2012100201251 A CN 2012100201251A CN 201210020125 A CN201210020125 A CN 201210020125A CN 102578118 A CN102578118 A CN 102578118A
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- sucrose ester
- microcapsule pesticide
- abamectin
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Abstract
The invention discloses a microcapsule pesticide compounding sucrose ester with abamectin and a preparation method of the microcapsule pesticide. The microcapsule pesticide comprises the following components by weight percentage accounting for the total weight of raw materials: sucrose ester accounting for 1 to 35 percent, abamectin accounting for 0.5 to 3 percent, dispersing agents accounting for 1 to 8 percent, solvent accounting for 1 to 6 percent, wall material accounting for 2 to 20 percent, and water accounting for 40 to 88 percent. The preparation method comprises the steps as follows: sucrose ester is added in aqueous solution of the dispersing agents according to prescription; a continuous phase is obtained after sucrose ester and aqueous solution of the dispersing agents are mixed uniformly; abamectin is completely dissolved in toluene to obtain an organic phase; the organic phase is added in the continuous phase, and mixed liquor is heated to reach the temperature ranging from 45 to 50 DEG C; wall material is added under constant temperature; and in addition, stirring operation is carried out for 25 to 30 minutes at the rotational speed ranging from 500 to 1000 r/min after an interfacial polymerization reaction is performed so as to obtain the microcapsule pesticide compounding sucrose ester with abamectin. The microcapsule pesticide achieves an excellent control effect on bemisia tabaci and aphides, and pests are difficult to be drug-resistant; and in addition, the preparation technology is simpler, the manufacturing cost is lower, and the microcapsule pesticide is suitable for being popularized and applied in large area.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of agriculture chemical compounding insecticide, be specifically related to sucrose ester and abamectin compounded microcapsule pesticide and preparation method thereof.
Background technology
China is the big producing country of crops such as large agricultural country, especially a wheat, cotton and tobacco leaf, and the economic loss that annual due to illness insect pest causes is huge.For a long time, China's pesticide producing formulation is main with conventional dosage forms such as missible oil, pulvis and wetting powders mainly.Because of containing a large amount of organic solvent contaminated environment, pulvis etc. then are prone to produce dust pollution in process of manufacture in the cream preparation.
The pesticide micro capsule agent is as cyst wall or cyst membrane with macromolecular material; Through chemistry, physics or physico-chemical process; Pesticidal active substance is wrapped up; Forming a kind of microencapsulation with semipermeability cyst membrane, is one of novel form of tool DEVELOPMENT PROSPECT in the current pesticides new formulation, have that efficiency time is long, environmental pollution is little, low to human toxicity, stable effective ingredients property good and be difficult for by characteristics such as rain drop erosiones.
Sucrose ester is the abbreviation of sucrose fatty ester, is that one or more hydroxyls and the aliphatic or aromatic acid esterification by sucrose forms.Sucrose ester can make the insect epithelium come off, the shrivelled death of dewatering, and its mechanism of action to insect is unclear fully as yet so far.
AVM has insect and mite class tags and stomach poison function, and faint fumigation action is arranged, no systemic action; But blade is had very strong osmosis, can kill subepidermal insect, and the longevity of residure is long; What its mechanism of action was different with general insecticide is that it disturbs neurophysiology movable; Stimulate to discharge y-aminobutyric acid, and y-aminobutyric acid has inhibitory action to arthropodan nerve conduction, little to the damage of beneficial insect.Its formulation is main with missible oil mainly, and long-term use of AVM list agent is prone to cause pest resistance constantly to increase.
At present, do not see the report that sucrose ester and abamectin compounded microcapsule pesticide are arranged.
Summary of the invention
The objective of the invention is the deficiency to prior art, provide a kind of wide to the control of insect spectrum, insect is difficult to develop immunity to drugs and the sucrose ester of safety and environmental protection and abamectin compounded microcapsule pesticide and preparation method thereof.Composite microcapsules preparation technology of the present invention is simple, production cost is lower.
Insect is serious day by day to the pesticide resistance that AVM produced, and the mechanism of action of sucrose ester is different from AVM, and the two is composite for not only having enlarged the control of insect spectrum behind the microcapsules, and has increased the action target spot of medicament, can delay pest resistance to insecticide.
Compare with other formulations of pesticide; The most important character of microcapsule formulations is its slow release; Its purpose is exactly that the lasting period of agricultural chemicals is prolonged; Particularly the longevity of residure prolongs in use in the agricultural chemicals field, and availability improves, and reduces or avoids agricultural chemicals to run off, alleviate toxicity and poisoning, reduction to the pollution of environment with to operating personnel's murder by poisoning because of the decomposition that external environment causes.
For reaching above purpose, the present invention has adopted following technical scheme:
A kind of sucrose ester and abamectin compounded microcapsule pesticide; By weight percentage; The percentage that said each component accounts for the raw material gross weight is: sucrose ester 1～35%, AVM 0.5～3%, dispersant 1～8%, solvent 1～6%, wall material 2～20%, water 40～88%;
Said sucrose ester is one or both in enanthic acid sucrose ester or the sucrose caprylic acid ester;
Said dispersant is sodium lignin sulfonate, neopelex or NPE;
Said solvent is a toluene;
Said wall material is multicomponent isocyanate-polyalcohol system, and multicomponent isocyanate is toluene di-isocyanate(TDI), hexamethylene diisocyanate or XDI, and polyalcohol is ethylene glycol, pentanediol or hexylene glycol; The mass ratio of multicomponent isocyanate and polyalcohol is 0.6～1.0;
During preparation, it is 2～10% aqueous dispersant that dispersant is added water configuration quality concentration, by prescription sucrose ester is joined in the aqueous dispersant; After mixing, obtain continuous phase, AVM fully is dissolved in obtains organic facies in the toluene; Organic facies is added in the continuous phase, be heated to 45～50 ℃, adding wall material under the constant temperature; Under 1600～3000r/min rotating speed, stir 30～60min; Carry out interface polymerization reaction, under 500～1000r/min rotating speed, continue to stir 25～30min then, get sucrose ester and abamectin compounded microcapsule pesticide.
Further, described water is preferably deionized water or distilled water.
Described sucrose ester preferably account for the raw material gross weight 5～30%, AVM preferably accounts for 1～2% of raw material gross weight.
The preparation method of described sucrose ester and abamectin compounded microcapsule pesticide: it is 2～10% aqueous dispersant that dispersant is added water configuration quality concentration range, by prescription sucrose ester is joined in the aqueous dispersant, after mixing; Obtain continuous phase; AVM fully is dissolved in obtains organic facies in the toluene, organic facies is added in the continuous phase, be heated to 45～50 ℃; Adding wall material under the constant temperature; Carry out interface polymerization reaction under the stirring condition, under 500～1000r/min rotating speed, continue then to stir 25～30min, can get sucrose ester and abamectin compounded microcapsule pesticide.
Further, the stirring condition of said interface polymerization reaction preferably stirs 30～60min under 1600～3000r/min rotating speed.
The present invention compared with prior art has following advantage:
(1) formulation of insecticides of the present invention is wide to the control of insect spectrum, and insect is difficult to develop immunity to drugs;
(2) the formulation of insecticides lasting period of the present invention long, preparation technology is simpler, production cost is lower;
(3) formulation of insecticides of the present invention meets the requirement of environmental type agricultural chemicals, and is suitable for large area applications.
Embodiment
Below in conjunction with embodiment the present invention is described further, but the scope that the present invention requires to protect is not limited thereto.
Embodiment 1
Configuration quality concentration is 8% lignin sulfonic acid sodium water solution, in reactor, adds 435g lignin sulfonic acid sodium water solution; Sucrose caprylic acid ester 350g after mixing, obtains continuous phase; The 5g AVM is dissolved in the 10g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 45 ℃; Constant temperature adds toluene di-isocyanate(TDI) 100g down, and ethylene glycol 100g stirs 45min under the 2000r/min rotating speed; Carry out interface polymerization reaction, under the 600r/min rotating speed, continue to stir 25min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion, use 2800 times of liquid of said preparation to the tobacco aphid medication after the control efficiency of the 7th day and 14 days be respectively 88.5%, 84.1%.
Embodiment 2
Configuration quality concentration is 2% sodium dodecyl benzene sulfonate aqueous solution, in reactor, adds the 880g sodium dodecyl benzene sulfonate aqueous solution; Add enanthic acid sucrose ester 10g, after mixing, obtain continuous phase; The 30g AVM is dissolved in the 60g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 46 ℃; Constant temperature adds hexamethylene diisocyanate 10g down, and pentanediol 10g stirs 50min under the 1600r/min rotating speed; Carry out interface polymerization reaction, under the 500r/min rotating speed, continue to stir 30min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion, use 1000 times of liquid of said preparation to the Bemisia tabaci medication after the control efficiency of the 8th day and 16 days be respectively 85.1%, 80.2%.
Embodiment 3
Configuration quality concentration is 2% the NPE aqueous solution, in reactor, adds the 500g NPE aqueous solution, adds sucrose caprylic acid ester 150g; Enanthic acid sucrose ester 150g after mixing, obtains continuous phase; The 10g AVM is dissolved in the 20g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 48 ℃; Constant temperature adds XDI 70g down, and hexylene glycol 100g stirs 55min under the 1800r/min rotating speed; Carry out interface polymerization reaction, under the 800r/min rotating speed, continue to stir 26min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion; The control efficiency of the 6th day and 12 days is respectively 89.6%, 86.7% after using 3000 times of liquid of said preparation to the soybean aphid medication, and the control efficiency of the 7th day and 14 days after the Bemisia tabaci medication is respectively 91.5%, 84.3%.
Embodiment 4
Configuration quality concentration is 10% lignin sulfonic acid sodium water solution, in reactor, adds 800g lignin sulfonic acid sodium water solution; Add sucrose caprylic acid ester 75g, after mixing, obtain continuous phase; The 15g AVM is dissolved in the 30g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 47 ℃; Constant temperature adds toluene di-isocyanate(TDI) 40g down, and pentanediol 40g stirs 30min under the 2600r/min rotating speed; Carry out interface polymerization reaction, under the 700r/min rotating speed, continue to stir 25min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion; The control efficiency of the 7th day and 15 days is respectively 83.2%, 80.5% after using 2000 times of liquid of said preparation to the tobacco aphid medication, and the control efficiency of the 9th day and 18 days after the Bemisia tabaci medication is respectively 84.1%, 75.6%.
Embodiment 5
Configuration quality concentration is 6% sodium dodecyl benzene sulfonate aqueous solution, in reactor, adds the 700g sodium dodecyl benzene sulfonate aqueous solution; Add enanthic acid sucrose ester 150g, after mixing, obtain continuous phase; The 20g AVM is dissolved in the 40g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 46 ℃; Constant temperature adds toluene di-isocyanate(TDI) 40g down, and hexylene glycol 50g stirs 40min under the 2000r/min rotating speed; Carry out interface polymerization reaction, under the 1000r/min rotating speed, continue to stir 28min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion, use 2200 times of liquid of said preparation to the soybean aphid medication after the control efficiency of the 8th day and 16 days be respectively 87.4%, 80.1%.
Embodiment 6
Configuration quality concentration is 4% the NPE aqueous solution, in reactor, adds the 550g NPE aqueous solution, adds sucrose caprylic acid ester 100g; Enanthic acid sucrose ester 120g after mixing, obtains continuous phase; The 25g AVM is dissolved in the 50g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 45 ℃; Constant temperature adds hexamethylene diisocyanate 70g down, and ethylene glycol 85g stirs 35min under the 3000r/min rotating speed; Carry out interface polymerization reaction, under the 600r/min rotating speed, continue to stir 30min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion, use 2500 times of liquid of said preparation to the Bemisia tabaci medication after the control efficiency of the 6th day and 12 days be respectively 90.3%, 86.2%.
Embodiment 7
Configuration quality concentration is 5% lignin sulfonic acid sodium water solution, in reactor, adds 520g lignin sulfonic acid sodium water solution; Add sucrose caprylic acid ester 255g, after mixing, obtain continuous phase; The 15g AVM is dissolved in the 30g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 50 ℃; Constant temperature adds hexamethylene diisocyanate 80g down, and hexylene glycol 100g stirs 60min under the 2200r/min rotating speed; Carry out interface polymerization reaction, under the 500r/min rotating speed, continue to stir 26min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion, use 1500 times of liquid of said preparation to the tobacco aphid medication after the control efficiency of the 7th day and 15 days be respectively 92.6%, 83.8%.
Embodiment 8
Configuration quality concentration is 3% sodium dodecyl benzene sulfonate aqueous solution, in reactor, adds the 900g sodium dodecyl benzene sulfonate aqueous solution; Add enanthic acid sucrose ester 45g, after mixing, obtain continuous phase; The 5g AVM is dissolved in the 10g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 46 ℃; Constant temperature adds XDI 15g down, and ethylene glycol 25g stirs 40min under the 2500r/min rotating speed; Carry out interface polymerization reaction, under the 800r/min rotating speed, continue to stir 25min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion; The control efficiency of the 8th day and 15 days is respectively 88.5%, 82.1% after using 1000 times of liquid of said preparation to the tobacco aphid medication, and the control efficiency of the 6th day and 12 days after the Bemisia tabaci medication is respectively 85.6%, 83.4%.
Embodiment 9
Configuration quality concentration is 8% the NPE aqueous solution, in reactor, adds the 650g NPE aqueous solution, adds sucrose caprylic acid ester 140g; Enanthic acid sucrose ester 40g after mixing, obtains continuous phase; The 10g AVM is dissolved in the 20g toluene obtains organic facies, organic facies is added in the continuous phase, be heated to 48 ℃; Constant temperature adds XDI 60g down, and pentanediol 80g stirs 50min under the 2800r/min rotating speed; Carry out interface polymerization reaction, under the 900r/min rotating speed, continue to stir 28min, can get sucrose ester and abamectin compounded microcapsule pesticide.Carry out dispenser and biologically active statistics according to the pesticide field efficacy medicine test criterion; The control efficiency of the 7th day and 15 days is respectively 90.8%, 86.2% after using 2000 times of liquid of said preparation to the soybean aphid medication, and the control efficiency of the 6th day and 12 days after the Bemisia tabaci medication is respectively 90.4%, 87.6%.
The foregoing description shows that sucrose ester of the present invention and abamectin compounded microcapsule pesticide are remarkable to the control efficiency of tobacco aphid, soybean aphid and Bemisia tabaci.Composite microcapsules of the present invention are environmentally friendly, the wide and difficult resistance that produces of control of insect spectrum; Preparation technology is simpler, and production cost is lower; Lasting period is long, and is suitable for large area applications.
Claims (5)
1. a sucrose ester and abamectin compounded microcapsule pesticide; It is characterized in that; By weight percentage; The percentage that said each component accounts for the raw material gross weight is: sucrose ester 1～35%, AVM 0.5～3%, dispersant 1～8%, solvent 1～6%, wall material 2～20%, water 40～88%;
Said sucrose ester is one or both in enanthic acid sucrose ester or the sucrose caprylic acid ester;
Said dispersant is sodium lignin sulfonate, neopelex or NPE;
Said solvent is a toluene;
Said wall material is multicomponent isocyanate-polyalcohol system, and multicomponent isocyanate is toluene di-isocyanate(TDI), hexamethylene diisocyanate or XDI, and polyalcohol is ethylene glycol, pentanediol or hexylene glycol; The mass ratio of multicomponent isocyanate and polyalcohol is 0.6～1.0;
During preparation, it is 2～10% aqueous dispersant that dispersant is added water configuration quality concentration, by prescription sucrose ester is joined in the aqueous dispersant; After mixing, obtain continuous phase, AVM fully is dissolved in obtains organic facies in the toluene; Organic facies is added in the continuous phase, be heated to 45～50 ℃, adding wall material under the constant temperature; Under 1600～3000r/min rotating speed, stir 30～60min; Carry out interface polymerization reaction, under 500～1000r/min rotating speed, continue to stir 25～30min then, get sucrose ester and abamectin compounded microcapsule pesticide.
2. sucrose ester according to claim 1 and abamectin compounded microcapsule pesticide is characterized in that, described water level deionized water or distilled water.
3. sucrose ester according to claim 1 and abamectin compounded microcapsule pesticide is characterized in that, described sucrose ester account for the raw material gross weight 5～30%, AVM accounts for 1～2% of raw material gross weight.
4. the preparation method of described sucrose ester of claim 1-3 and abamectin compounded microcapsule pesticide is characterized in that: it is 2～10% aqueous dispersant that dispersant is added water configuration quality concentration range, by prescription sucrose ester is joined in the aqueous dispersant; After mixing, obtain continuous phase, AVM fully is dissolved in obtains organic facies in the toluene; Organic facies is added in the continuous phase; Be heated to 45～50 ℃, adding wall material under the constant temperature carries out interface polymerization reaction under the stirring condition; Under 500～1000r/min rotating speed, continue then to stir 25～30min, can get sucrose ester and abamectin compounded microcapsule pesticide.
5. the preparation method of sucrose ester according to claim 4 and abamectin compounded microcapsule pesticide is characterized in that, the stirring condition of said interface polymerization reaction is under 1600～3000r/min rotating speed, to stir 30～60min.
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| CN2012100201251A CN102578118A (en) | 2012-01-30 | 2012-01-30 | Microcapsule pesticide compounding sucrose ester with abamectin and preparation method of microcapsule pesticide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105746509A (en) * | 2016-02-01 | 2016-07-13 | 扬州大学 | Nematicide microcapsule and preparation method thereof |
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| JPH07173017A (en) * | 1993-12-17 | 1995-07-11 | Toshio Suzuki | Composition for preventing pines from being damaged by death and method for prevention |
| CN102106345A (en) * | 2009-12-28 | 2011-06-29 | 联合国南通农药剂型开发中心 | Avermectin microcapsule suspending agent and preparation method thereof |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07173017A (en) * | 1993-12-17 | 1995-07-11 | Toshio Suzuki | Composition for preventing pines from being damaged by death and method for prevention |
| CN102106345A (en) * | 2009-12-28 | 2011-06-29 | 联合国南通农药剂型开发中心 | Avermectin microcapsule suspending agent and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| ORESTES T.CHORTYK ET AL: "Syntheses and Characterizations of Insecticidal Sucrose Esters", 《J.AGRIC.FOOD CHEM》, vol. 44, 31 December 1996 (1996-12-31), pages 1551 - 1557 * |
| 李双月 等: "合成辛酸蔗糖酯的杀虫活性", 《湖北农业科学》, vol. 49, no. 3, 31 March 2010 (2010-03-31), pages 580 - 583 * |
| 樊玉松 等: "阿维菌素微胶囊剂的制备", 《河北农业大学学报》, vol. 32, no. 2, 31 March 2009 (2009-03-31), pages 97 - 100 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105746509A (en) * | 2016-02-01 | 2016-07-13 | 扬州大学 | Nematicide microcapsule and preparation method thereof |
| CN105746509B (en) * | 2016-02-01 | 2018-07-03 | 扬州大学 | A kind of nematicide microcapsules and preparation method thereof |
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Application publication date: 20120718 |